[bug] unconfigured remark-lint causes codacy status check failures

[DerekNonGeneric]

Codacy is configured to use remark-lint (in addition to our current Markdown linter), which appears to be using the default rules since we currently lack a configuration file for it in this repo. Some Markdown lint rules are unique to this linter that we could benefit from, so we should have it properly configured to pass checks for that tool. Fortunately, we had already been using this Markdown linter in our site repo, so may be able to copy that configuration over and add any additional tasks or rules to ensure we can run it locally before pushing up any new commits.

[DerekNonGeneric]

closed this in 1a4d612